احمد خالد ازاد, and Mahfooth Abdulkader زياد. “The Effect of a Physical Training Curriculum Using the Second Part of the Second Zone of Interval Training Zones on Aerobic Efficiency, Fatigue Index, and Speed Endurance of Advanced Soccer Players”. Al-Rafidain Journal For Sport Sciences 28, no. 88 (October 24, 2025): 1–23. Accessed November 1, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/53578.